Socket.IO-java-客户端和node.js -握手时出错

Question

我正在尝试开发一个将连接到node.js服务器的安卓应用程序。下面是错误消息：

04-28 14:24:52.250: W/System.err(811): io.socket.SocketIOException: Error while handshaking
04-28 14:24:52.250: W/System.err(811):  at io.socket.IOConnection.handshake(IOConnection.java:322)
04-28 14:24:52.259: W/System.err(811):  at io.socket.IOConnection.access$600(IOConnection.java:39)
04-28 14:24:52.259: W/System.err(811):  at io.socket.IOConnection$ConnectThread.run(IOConnection.java:199)
04-28 14:24:52.259: W/System.err(811): Caused by: java.lang.ArrayIndexOutOfBoundsException
04-28 14:24:52.306: W/System.err(811):  at io.socket.IOConnection.handshake(IOConnection.java:318)
04-28 14:24:52.306: W/System.err(811):  ... 2 more

服务器：

 var http = require('http');
    http.createServer(function (req, res) {
      res.writeHead(200, {'Content-Type': 'text/plain'});
      res.end('Hello World\n');
    }).listen(8881, '192.168.1.107');
    console.log('Server running at http://192.168.1.107:8881/');

客户端：

public class RestClientActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        try {
            SocketIO socket = new SocketIO("http://192.168.1.107:8881/");
            socket.connect(new IOCallback() {
                @Override
                public void onMessage(JSONObject json, IOAcknowledge ack) {
                    try {
                        System.out.println("Server said:" + json.toString(2));
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void onMessage(String data, IOAcknowledge ack) {
                    System.out.println("Server said: " + data);
                }

                @Override
                public void onError(SocketIOException socketIOException) {
                    System.out.println("an Error occured");
                    socketIOException.printStackTrace();
                }

                @Override
                public void onDisconnect() {
                    System.out.println("Connection terminated.");
                }

                @Override
                public void onConnect() {
                    System.out.println("Connection established");
                }

                @Override
                public void on(String event, IOAcknowledge ack, Object... args) {
                    System.out
                            .println("Server triggered event '" + event + "'");
                }
            });

            // This line is cached until the connection is establisched.
             socket.send("Hello Server!");
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

你知道我做错了什么吗？如果我在浏览器中输入http://192.168.1.107:8881/，它会在页面上显示"Hello World“，但我无法使用socket.io-java-client库进行连接。

Answer 1

首先，如果您尝试使用socket.io 为您的服务创建rest客户端，则不必使用，只需使用服务器就可以了，在客户端使用HTTPClient就可以了。

假设你使用这个android socket.io客户端Java Socket.io client，我也用过它。

将此脚本作为服务器端套接字io脚本进行尝试，这是LearnBoost/socket.io的基本示例

var server = require('http').Server();
var io = require('socket.io')(server);
io.on('connection', function(socket){
  socket.on('message', function(data){
    console.log("Received message : "+data);
    socket.emit("message","echoing back : "+data);
  });
  socket.on('disconnect', function(){
    // client disconnected
   });
});
server.listen(8881,"192.168.1.107");